Question

Will give a medal to first to answer!! Suppose U={1,2,3,4,5,6,7,8,9,10} is the universal subset and M={7,8,9,10}. What is M?
A :{1,2,3,4,5,6}
B:{1,2,3,4,5,6,7,8,910}
C: Cannot be determined
D: {7,8,9,10}

Answer 1

M is a subset of U

Answer 2

I've seen this question before on this website. Are you sure there isn't a (hard to see) apostrophe after the M in the last sentence?

i.e. What is \(M'\)?

Answer 3

Oh there is i missed that.

Answer 4

\[M' = U - M\]
\(M'\) is all the numbers in \(U\) that don't appear in \(M\)

Answer 5

So 1-6.

Answer 6

Yeah

Answer 7

Man that was really simple. Thanks!

Answer 8

M'={1,2,3,4,5,6}

Answer 9

By the way, sometimes you might see the difference as two sets written like this:
\[U \backslash M\]
it's just the same as
\[U - M\]

Answer 10

*difference of two sets

Not enough coffee today

Answer 11

Agreed... Thanks again!